Can't find anywhere - Remington 19718 870 DM 12 Gauge 6 Rd Polymer Black Finish

Wondering if Remington stopped making these as I have been looking for them since Oct. of 1999 with no luck. Remington should NEVER have sold the 870DM without having an abundant supply of magazines for them for purchase and they should have come with at least 2. Makes me sorry that I ever purchased the 870DM shotgun now. What good is a detachable magazine if you have to fill it every time and can't just put another loaded one in? It defeats the purpose and you may as well just have the regular 870. I am VERY disappointed in Remington for this. VERY poor planing!